A modified cold cutting knife structure for cutting a composite pipe and a method of using the same

Abstract

This invention discloses a modified refrigeration cutter structure and its usage method for cutting composite pipes, including a cutter holder, an upper cutter holder, a lower cutter holder, a cutter mechanism, and a rounding and balancing assembly. The cutter holder and the lower cutter holder are vertically aligned and spliced ​​together to form a hollow rectangular structure with open sides, and are interlocked on a horizontally arranged composite pipe. The upper cutter holder is vertically positioned inside the cutter holder relative to the top of the composite pipe, and the upper cutter holder moves vertically up and down within the cutter holder via an adjustment assembly. A cutter mechanism is arranged in a cross shape along the circumference of the composite pipe, with the upper two cutter mechanisms mounted on the lower surface of the upper cutter holder and the lower two cutter mechanisms mounted on the upper surface of the lower cutter holder. A rounding and balancing assembly is located at the midpoint of the left and right sides of the upper and lower cutter holders. The composite pipe cutting operation is performed by rotating the cutter holder around the axial direction of the composite pipe. This invention ensures a smooth cut surface for the composite pipe.

Description

Technical Field

[0001] This invention relates to the field of composite pipe cutting technology, specifically to a modified refrigeration cutting blade structure for composite pipe cutting and its usage method. Background Technology

[0002] Composite pipes often need to be cut into segments of the required length during use. The current method is to manually measure the required length and mark it before cutting, and then cut it using an angle grinder, saber saw or rotary metal pipe cutter.

[0003] However, angle grinders, saber saws, and rotary metal pipe cutters each have the following drawbacks during the cutting process: 1) Angle grinders produce sparks during cutting, and some construction sites have requirements prohibiting open flames; 2) The direction of cutting with angle grinders and saber saws is not easy to control, resulting in a bevel on the end face of the composite pipe after cutting. This requires grinding and finishing the end face of the composite pipe after cutting, which is time-consuming and labor-intensive; 3) Due to the ellipticity of the composite pipe, using a rotary metal pipe cutter can easily lead to inconsistent cutting depths; moreover, because the overall ring stiffness of the composite pipe is relatively lower than that of steel pipe, the rotary metal pipe cutter is prone to tilting after applying pressure, resulting in an uneven cut surface, which requires grinding after cutting; in addition, because the surface of the composite pipe is relatively softer than that of steel pipe, it is easily scratched by the blade holder of the rotary metal pipe cutter, which also requires grinding after cutting.

[0004] Therefore, how to develop a new type of composite pipe cutting device that can solve the tilting problem during the cutting process while also addressing the wear problem on the surface of the composite pipe has become an urgent problem to be solved. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a modified refrigeration cutter structure for cutting composite pipes and its usage method. The traction spring applies tension to the clamping wheel through the cooperation of the intermediate connecting plate and the cutter holder connecting plate, thereby realizing the clamping and rounding function of the composite pipe, effectively ensuring the perpendicularity of the cutter to the composite pipe, and ensuring the flatness of the cut surface of the composite pipe.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: The innovative feature of the modified refrigeration cutter structure for composite pipe cutting is that it includes a cutter holder, an upper cutter holder, an adjustment component, a lower cutter holder, a cutting mechanism, and a rounding and balancing component. The cutter holder and the lower cutter holder are vertically aligned and spliced ​​together to form a hollow rectangular structure that is open on both sides, and are spaced out and fitted onto the horizontally arranged composite pipe. Inside the cutter holder, a vertically aligned upper cutter holder matching the lower cutter holder is also provided at a position directly above the composite pipe. The upper cutter holder and the lower cutter holder are symmetrically arranged vertically at intervals, and the cutting mechanism is adjusted by the adjustment component. The internal part of the blade holder moves vertically up and down relative to the area above the composite tube. A cross-shaped symmetrical cutting mechanism is also provided on the outer side of the composite tube along the circumference. The two upper cutting mechanisms are installed on the corresponding positions on the lower surface of the upper blade holder, and the two lower cutting mechanisms are installed on the corresponding positions on the upper surface of the lower blade holder. A symmetrical balancing assembly for clamping and balancing the composite tube is also provided at the middle positions of the left and right sides of the upper blade holder and the middle positions of the left and right sides of the lower blade holder. After the cutting ends of the four cutting mechanisms contact the surface of the composite tube, the composite tube is cut by rotating the blade holder around the axial direction of the composite tube.

[0007] Preferably, the cutter holder is an inverted U-shape that matches the composite pipe, and its opening slot is arranged horizontally and suspended on the horizontally arranged composite pipe; the two opening ends of the cutter holder extend vertically downward from the front and rear sides of the composite pipe to a position slightly below the horizontal plane where the center of the composite pipe is located, and the distance between its two opening ends is greater than the outer diameter of the composite pipe, and ensures that its internal height is greater than the outer diameter of the composite pipe.

[0008] Preferably, the lower blade holder is a V-shape that matches the composite pipe, and its opening slot is arranged horizontally. The horizontal width of the lower blade holder is greater than the horizontal width of the cutter holder, and its two opening ends are vertically flanged upwards, ensuring that the distance between the flanges of its two opening ends is consistent with the distance between the two opening ends of the cutter holder. The upper blade holder is a V-shape that matches the lower blade holder, and its opening slot is arranged horizontally. The horizontal width of the upper blade holder is consistent with the horizontal width of the cutter holder, and its two opening ends are arranged downwards to both sides, ensuring that the distance between its two opening ends is consistent with the distance between the two opening ends of the cutter holder.

[0009] Preferably, it also includes a connecting shaft; a slot matching the two opening ends of the cutter holder is vertically embedded in the middle of the two open end faces of the lower cutter holder, and each slot extends outward from the inner and outer sides of the two open ends of the lower cutter holder in the front-back direction; the two open ends of the cutter holder are vertically aligned and inserted into the corresponding slots, and a connecting shaft is horizontally inserted through the two open ends of the cutter holder relative to the corresponding slots, with the left and right ends of each connecting shaft extending outward from the left and right sides of the corresponding open end of the lower cutter holder, and the cutter holder and the lower cutter holder are spliced ​​and connected together by the connecting shaft.

[0010] Preferably, the adjusting assembly includes an adjusting screw and a lever sleeve; a lever sleeve is also vertically provided at the middle position of the upper surface of the cutter holder, and the lower end of the lever sleeve extends vertically downward from the inner top surface of the cutter holder and is integrally formed with the cutter holder; the adjusting screw is T-shaped, and its vertical side is a threaded section, which passes through the lever sleeve coaxially in the downward direction; the vertical side of the adjusting screw is screwed to the lever sleeve, and its vertical side end face is rotatably connected to the middle position of the upper surface of the upper cutter holder; thereby, by rotating the adjusting screw, the upper cutter holder is driven to move vertically up and down relative to the area above the composite pipe inside the cutter holder.

[0011] Preferably, each of the cutting mechanisms includes a mounting base, a pin, a cutting blade, and a drive assembly; cutting blades are also symmetrically arranged in a cross shape along the circumferential direction on the outside of the composite tube, and each cutting blade is vertically arranged along the radial direction of the composite tube; the two upper cutting blades are located at corresponding positions on the lower surface of the upper blade holder, and their upper parts extend into the interior of the upper blade holder, ensuring that the upper blade holder does not interfere with the rotation of the two upper cutting blades around their own axes; the two lower cutting blades are located at corresponding positions on the upper surface of the lower blade holder, and their lower parts extend into the interior of the lower blade holder, ensuring that the lower blade holder does not interfere with the rotation of the two lower cutting blades around their own axes. The rotational movement does not cause interference; the lower surface of the upper blade holder relative to the left and right sides of the corresponding cutter, and the upper surface of the lower blade holder relative to the left and right sides of the corresponding cutter are respectively provided with mounting seats vertically, and each mounting seat is integrally formed with the corresponding upper blade holder or lower blade holder; a horizontally transversely coaxial pin is also provided at the center of each cutter, and each pin is clearance-fitted with the corresponding cutter. Both ends of each pin are respectively rotatably connected to the corresponding mounting seat around its own axis, and one end is respectively linked to the drive end of the corresponding drive assembly, thereby driving the corresponding cutter to rotate around its own axis.

[0012] Preferably, the upper limit position of the upper blade holder must ensure that the two upper blades move vertically upward away from the composite tube along with the upper blade holder, and do not interfere with the horizontal movement of the composite tube through the blade holder; the lower limit position of the upper blade holder must ensure that when the composite tube is horizontally supported on the two lower blades, the two upper blades move vertically downward along with the upper blade holder and contact the corresponding positions on the surface of the composite tube.

[0013] Preferably, the four balancing components are arranged symmetrically in a rectangle, and each balancing component includes a tool holder connecting plate, a bolt, an intermediate connecting plate, a pressure wheel connecting plate, a pressure wheel mounting bracket, a pressure wheel, and a traction spring. Threaded holes matching the bolts are vertically embedded at intervals on the middle positions of the left and right sides of the upper tool holder and the lower tool holder. Tool holder connecting plates are also vertically arranged on the middle positions of the left and right sides of the upper and lower tool holders. On the left side of each tool holder connecting plate, corresponding to each threaded hole, a mounting hole matching the threaded hole is vertically embedded through it. Through the cooperation of the mounting holes, threaded holes, and bolts, the four tool holder connecting plates are screwed onto the middle positions of the left and right sides of the upper and lower tool holders. On the upper and lower sides of the composite pipe, relative to the outer side of each tool holder connecting plate, horizontal pressure roller connecting plates are respectively provided. The four pressure roller connecting plates and the four tool holder connecting plates are arranged in the same vertical and horizontal plane. Between the outer surface of each tool holder connecting plate and the lower surface of the adjacent pressure roller connecting plate, an intermediate connecting plate is also provided horizontally. One end of each intermediate connecting plate is vertically and horizontally hinged to the corresponding pressure roller connecting plate, and the other end is vertically and horizontally hinged to the corresponding tool holder connecting plate. A traction spring is also provided obliquely between the surface of each intermediate connecting plate near the composite pipe and the end face of the corresponding tool holder connecting plate near the composite pipe. One end of each traction spring is vertically and horizontally hinged to the corresponding position of the intermediate connecting plate, and the other end is connected to the corresponding tool holder. The connecting plates are vertically and horizontally hinged at corresponding positions, and the traction spring ensures that each clamping wheel connecting plate is positioned closer to the composite tube than its corresponding tool holder connecting plate. Each clamping wheel connecting plate has a horizontally symmetrical U-shaped clamping wheel mounting bracket on both its front and rear ends. The bottom of each clamping wheel mounting bracket is integrally formed with the corresponding clamping wheel connecting plate, with its two open ends positioned left and right, extending outwards towards the composite tube. Each clamping wheel is horizontally positioned within its corresponding clamping wheel mounting bracket, and its two ends are rotatably connected to the inner surfaces of the two open ends of the corresponding clamping wheel mounting bracket, ensuring that its axial direction is consistent with the axial direction of the composite tube. This allows the traction spring to apply tension to the clamping wheel through the cooperation of the intermediate connecting plate and the tool holder connecting plate, clamping and rounding the composite tube using the clamping wheel.

[0014] Preferably, the surface of each of the clamping rollers is also covered with a matching rubber, and the specifications of each of the traction springs are required to ensure that when the composite tube is cut close to the upper and lower blade holders, the intermediate connecting plate and the blade holder connecting plate can cooperate to form a limit, thereby preventing the surface of the composite tube from being worn by the upper or lower blade holder.

[0015] The innovative aspect of this invention, which describes a method for using a modified refrigeration cutting blade for cutting composite pipes, comprises the following steps: Step 1: First, turn the adjusting screw counterclockwise to raise the upper tool post to its upper limit position; Step 2: Then, pass the composite pipe horizontally through the cutter holder and support the desired cutting position of the composite pipe on the two cutters on the lower side; Step 3: Then, by using bolts, mounting holes and threaded holes, install the four rounding and balancing components on the corresponding positions on the left and right sides of the upper tool holder and the corresponding positions on the left and right sides of the lower tool holder, and position the eight clamping rollers on the side close to the composite pipe. Step 4: Then rotate the adjusting screw clockwise to lower the upper blade holder and make the two upper blades contact the corresponding positions on the surface of the composite tube. At this time, the traction spring applies tension to the clamping wheels through the cooperation of the middle connecting plate and the blade holder connecting plate, so that the eight clamping wheels respectively contact the surface of the composite tube, thereby clamping and rounding the composite tube. Step 5: Then start the cutting mechanism, and then rotate the cutting tool holder around the composite pipe axis by adjusting the screw to cut the composite pipe. At the same time, you need to slowly rotate the adjusting screw clockwise to ensure the cutting depth until the composite pipe is cut. During this process, the intermediate connecting plate and the tool holder connecting plate cooperate to form a limit to prevent the surface of the composite pipe from being worn by the upper and lower tool holders.

[0016] The beneficial effects of this invention are: (1) The traction spring of the present invention applies tension to the clamping wheel through the cooperation of the intermediate connecting plate and the blade holder connecting plate, thereby realizing the clamping and rounding function of the composite tube, effectively ensuring the perpendicularity of the cutter and the composite tube, and ensuring the flatness of the cut surface of the composite tube; (2) The present invention can prevent the composite tube from tilting during the cutting process by clamping and rounding the composite tube, thus ensuring the consistency of the cutting depth; (3) When the composite tube is cut close to the upper and lower blade holders, the present invention can form a limit by the cooperation of the intermediate connecting plate and the blade holder connecting plate, thereby avoiding the phenomenon of the composite tube surface being worn by the blade holder; (4) The surface of the pressing wheel of the present invention is covered with rubber, which can increase the friction between the pressing wheel and the composite tube and reduce the damage to the surface of the composite tube. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the modified refrigeration cutting blade structure for composite pipe cutting according to the present invention.

[0019] Figure 2 for Figure 1 The front view.

[0020] Figure 3 for Figure 1 A schematic diagram of the structure of the middle cutting tool holder, the upper tool holder, and the lower tool holder.

[0021] Figure 4 for Figure 1 A schematic diagram of the balancing assembly of the middle-level officer.

[0022] Figure 5 for Figure 4 The front view.

[0023] Among them, 1-composite pipe; 2-rounding and balancing assembly; 3-adjusting screw; 4-lever sleeve; 5-cutting blade holder; 6-upper blade holder; 7-lower blade holder; 8-cutting blade; 9-pin shaft; 10-threaded hole; 21-blade holder connecting plate; 22-mounting hole; 23-intermediate connecting plate; 24-pressure wheel connecting plate; 25-pressure wheel mounting bracket; 26-pressure wheel; 27-traction spring. Detailed Implementation

[0024] The technical solution of the present invention will be clearly and completely described below through specific embodiments.

[0025] The present invention discloses a modified refrigeration cutter structure for cutting composite pipes, comprising a cutter holder 5, an upper cutter holder 6, an adjustment assembly, a lower cutter holder 7, a cutter mechanism, and a rounding and balancing assembly 2; the specific structure is as follows: Figures 1-5 As shown, the cutter holder 5 and the lower cutter holder 7 are vertically aligned and spliced ​​together to form a hollow rectangular structure that is open on both sides, and are interlocked on the horizontally arranged composite pipe 1. The cutter holder 5 is an inverted U-shape that matches the composite pipe 1, and its opening slot is arranged horizontally and suspended on the horizontally arranged composite pipe 1. The two open ends of the cutter holder 5 extend vertically downward from the front and rear sides of the composite pipe 1 to a position slightly below the horizontal plane where the center of the composite pipe 1 is located, and the distance between the two open ends is greater than the outer diameter of the composite pipe 1, and ensures that its internal height is greater than the outer diameter of the composite pipe 1.

[0026] like Figures 1-5 As shown, the lower blade holder 7 is a V-shape that matches the composite pipe 1, and its opening slot is set horizontally. The horizontal width of the lower blade holder 7 is greater than the horizontal width of the cutter holder 5, and its two opening ends are vertically flanged upwards, ensuring that the distance between the flanges of its two opening ends is consistent with the distance between the two opening ends of the cutter holder 5.

[0027] like Figures 1-5 As shown, a slot matching the two opening ends of the cutter holder 5 is vertically embedded in the middle of the two open end faces of the lower cutter holder 7, and each slot extends outward from the inner and outer sides of the two open ends of the lower cutter holder 7 in the front-back direction; the two open ends of the cutter holder 5 are vertically aligned and inserted into the corresponding slots, and a connecting shaft is horizontally inserted through the two open ends of the cutter holder 5 relative to the corresponding slots. The left and right ends of each connecting shaft extend outward from the left and right sides of the corresponding open ends of the lower cutter holder 7, and the cutter holder 5 and the lower cutter holder 7 are spliced ​​and connected together through the connecting shaft.

[0028] In this invention, an upper blade holder 6, matching the lower blade holder 7, is vertically arranged inside the cutter holder 5, directly above the composite tube 1. The upper blade holder 6 and the lower blade holder 7 are symmetrically arranged at vertical intervals, and can move vertically up and down inside the cutter holder 5 relative to the area above the composite tube 1 via an adjustment component; for example... Figures 1-5 As shown, the upper blade holder 6 is a V-shape that matches the lower blade holder 7, and its opening slot is set horizontally. The horizontal width of the upper blade holder 6 matches the horizontal width of the cutter holder 5, and its two opening ends are set downwards in the direction of both sides, ensuring that the distance between its two opening ends matches the distance between the two opening ends of the cutter holder 5.

[0029] The adjusting assembly of this invention includes an adjusting lead screw 3 and a lever sleeve 4; as shown Figures 1-5 As shown, a lever sleeve 4 is vertically provided in the middle of the upper surface of the cutter holder 5, and the lower end of the lever sleeve 4 extends vertically downward out of the inner top surface of the cutter holder 5 and is integrally formed with the cutter holder 5; the adjusting screw 3 is T-shaped, and its vertical side is a threaded section, and it passes through the lever sleeve 4 coaxially in the direction from top to bottom. The vertical side of the adjusting screw 3 is screwed to the lever sleeve 4, and its vertical side end face is rotatably connected to the middle position of the upper surface of the upper blade holder 6. Then, by rotating the adjusting screw 3, the upper blade holder 6 is driven to move vertically up and down in the area above the composite pipe 1 inside the cutter holder 5.

[0030] The present invention also provides a cross-shaped symmetrical cutting mechanism on the outer side of the composite tube 1 along the circumferential direction, with the upper two cutting mechanisms installed at corresponding positions on the lower surface of the upper cutter holder 6, and the lower two cutting mechanisms installed at corresponding positions on the upper surface of the lower cutter holder 7; wherein, each cutting mechanism includes a mounting base, a pin 9, a cutting blade 8, and a drive assembly; as shown Figures 1-5 As shown, cutters 8 are symmetrically arranged in a cross shape along the circumferential direction on the outside of the composite pipe 1, and each cutter 8 is arranged vertically along the radial direction of the composite pipe 1; the two upper cutters 8 are located at corresponding positions on the lower surface of the upper cutter holder 6, and their upper parts extend into the interior of the upper cutter holder 6, ensuring that the upper cutter holder 6 does not interfere with the rotation of the two upper cutters 8 around its own axis; the two lower cutters 8 are located at corresponding positions on the upper surface of the lower cutter holder 7, and their lower parts extend into the interior of the lower cutter holder 7, ensuring that the lower cutter holder 7 does not interfere with the rotation of the two lower cutters 8 around its own axis. like Figures 1-5As shown, mounting seats are vertically provided on the lower surface of the upper blade holder 6 relative to the left and right sides of the corresponding cutter 8, and on the upper surface of the lower blade holder 7 relative to the left and right sides of the corresponding cutter 8, respectively. Each mounting seat is integrally formed with the corresponding upper blade holder 6 or lower blade holder 7. A horizontally transversely coaxial pin 9 is also provided at the center of each cutter 8, and each pin 9 is clearance-fitted with the corresponding cutter 8. Both ends of each pin 9 are rotatably connected to the corresponding mounting seat around its own axis, and one end is linked to the drive end of the corresponding drive assembly, thereby driving the corresponding cutter 8 to rotate around its own axis. The cutting mechanism of this invention is an existing device for cutting composite pipes 1, which is prior art, so its structure will not be described in detail here.

[0031] The upper limit position of the upper blade holder 6 of this invention must ensure that the two upper cutting blades 8 move vertically upward away from the composite tube 1 along with the upper blade holder 6, and do not interfere with the horizontal movement of the composite tube 1 through the cutting blade holder 5; the lower limit position of the upper blade holder 6 must ensure that when the composite tube 1 is horizontally supported on the two lower cutting blades 8, the two upper cutting blades 8 move vertically downward along with the upper blade holder 6 and contact the corresponding position on the surface of the composite tube 1.

[0032] The present invention also symmetrically provides rounding and balancing components 2 for clamping and rounding the composite tube 1 at the middle positions of the left and right sides of the upper blade holder 6 and the middle positions of the left and right sides of the lower blade holder 7. After the cutting ends of the four cutting mechanisms contact the surface of the composite tube 1, the cutting blade holder 5 is rotated around the axial direction of the composite tube 1 to perform the cutting operation of the composite tube 1. The four rounding and balancing components 2 are arranged in a rectangular symmetrical manner, and each rounding and balancing component 2 includes a blade holder connecting plate 21, a bolt, an intermediate connecting plate 23, a pressure wheel connecting plate 24, a pressure wheel mounting bracket 25, a pressure wheel 26, and a traction spring 27. Figures 1-5 As shown, threaded holes 10 matching bolts are vertically embedded at intervals on the middle positions of the left and right sides of the upper tool holder 6 and the lower tool holder 7. Tool holder connecting plates 21 are vertically installed on the middle positions of the left and right sides of the upper tool holder 6 and the lower tool holder 7. On the left side of each tool holder connecting plate 21, a mounting hole 22 matching the threaded hole 10 is vertically embedded through each threaded hole 10 at the corresponding position. Through the cooperation of the mounting hole 22, the threaded hole 10 and the bolts, the four tool holder connecting plates 21 are screwed and installed on the middle positions of the left and right sides of the upper tool holder 6 and the lower tool holder 7 respectively. like Figures 1-5As shown, on the upper and lower sides of the composite pipe 1, relative to the outer side of each tool holder connecting plate 21, there are horizontally arranged pressure roller connecting plates 24, and the four pressure roller connecting plates 24 and the four tool holder connecting plates 21 are arranged in the same vertical and horizontal plane; between the outer side of each tool holder connecting plate 21 and the lower surface of the adjacent pressure roller connecting plate 24, there is also a horizontally inclined intermediate connecting plate 23, one end of each intermediate connecting plate 23 is vertically and horizontally hinged to the corresponding pressure roller connecting plate 24, and the other end is connected to the corresponding tool holder. The connecting plate 21 is vertically and horizontally hinged, and a traction spring 27 is also inclinedly provided between the surface of each intermediate connecting plate 23 near the composite pipe 1 and the end face of the corresponding tool holder connecting plate 21 near the composite pipe 1. One end of each traction spring 27 is vertically and horizontally hinged to the corresponding position of the corresponding intermediate connecting plate 23, and the other end is vertically and horizontally hinged to the corresponding position of the corresponding tool holder connecting plate 21. Thus, the traction spring 27 makes each pressure wheel connecting plate 24 located on the side closer to the composite pipe 1 relative to the corresponding tool holder connecting plate 21. like Figures 1-5 As shown, each clamping wheel connecting plate 24 has a U-shaped clamping wheel mounting bracket 25 horizontally and symmetrically arranged on both the front and rear ends. The bottom of each clamping wheel mounting bracket 25 is integrally formed with the corresponding clamping wheel connecting plate 24. Both of its two open ends are arranged on the left and right, and both extend outward toward the composite pipe 1. Each clamping wheel 26 is horizontally arranged in the corresponding clamping wheel mounting bracket 25, and its two ends are rotatably connected to the inner side of the two open ends of the corresponding clamping wheel mounting bracket 25, ensuring that its axis is consistent with the axis of the composite pipe 1. Thus, the traction spring 27 applies tension to the clamping wheel 26 through the cooperation of the intermediate connecting plate 23 and the knife holder connecting plate 21, and clamps and rounds the composite pipe 1 through the clamping wheel 26.

[0033] like Figures 1-5 As shown, each clamping wheel 26 is also covered with a matching rubber, and the specifications of each traction spring 27 are required to ensure that when cutting the composite tube 1 close to the upper blade holder 6 and the lower blade holder 7, the intermediate connecting plate 23 and the blade holder connecting plate 21 can form a limit to prevent the surface of the composite tube 1 from being worn by the upper blade holder 6 or the lower blade holder 7.

[0034] A method of using a modified refrigeration cutter structure for cutting composite pipes according to the present invention, such as... Figures 1-5 As shown, it includes the following steps: Step 1: First, rotate the adjusting screw 3 counterclockwise to raise the upper tool holder 6 to the upper limit position.

[0035] Step 2: Then, the composite tube 1 is passed horizontally through the cutter holder 5, and the desired cutting position of the composite tube 1 is supported on the two cutters 8 on the lower side.

[0036] Step 3: Then, by using the bolts, mounting holes 22 and threaded holes 10, install the four rounding and balancing components 2 on the corresponding positions on the left and right sides of the upper tool holder 6 and the corresponding positions on the left and right sides of the lower tool holder 7, and position the eight clamping wheels 26 on the side close to the composite pipe 1.

[0037] Step 4: Then rotate the adjusting screw 3 clockwise to lower the upper blade holder 6 and make the two upper cutting blades 8 contact the corresponding positions on the surface of the composite tube 1. At this time, the traction spring 27 applies tension to the clamping wheel 26 through the cooperation of the intermediate connecting plate 23 and the blade holder connecting plate 21, so that the eight clamping wheels 26 respectively abut against the surface of the composite tube 1, thereby clamping and rounding the composite tube 1.

[0038] Step 5: Then start the cutting mechanism, and then rotate the cutting tool holder 5 around the composite tube 1 by adjusting the screw 3 to perform the cutting operation on the composite tube 1. At the same time, the adjusting screw 3 should be slowly rotated clockwise to ensure the cutting depth until the composite tube 1 is cut. During this process, the intermediate connecting plate 23 and the tool holder connecting plate 21 cooperate to form a limit to prevent the surface of the composite tube 1 from being worn by the upper tool holder 6 and the lower tool holder 7.

[0039] The beneficial effects of this invention are: (1) The traction spring 27 of the present invention applies tension force to the clamping wheel 26 through the cooperation of the intermediate connecting plate 23 and the knife holder connecting plate 21, thereby realizing the clamping and rounding function of the composite tube 1, effectively ensuring the perpendicular state of the cutter 8 and the composite tube 1, and ensuring the flatness of the cutting surface of the composite tube 1. (2) The present invention can prevent the composite tube 1 from tilting during the cutting process by clamping and rounding the composite tube 1, thus ensuring the consistency of the cutting depth; (3) When the composite tube 1 is cut close to the upper blade holder 6 and the lower blade holder 7, the present invention can form a limit by the cooperation of the intermediate connecting plate 23 and the blade holder connecting plate 21, thereby avoiding the phenomenon of the composite tube 1 being worn by the blade holder. (4) The surface of the pressing wheel 26 of the present invention is covered with rubber, which can increase the friction between the pressing wheel 26 and the composite tube 1 and reduce the damage to the surface of the composite tube 1.

[0040] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the concept and scope of the present invention. Without departing from the design concept of the present invention, all modifications and improvements made by those skilled in the art to the technical solutions of the present invention should fall within the protection scope of the present invention. The technical content for which protection is sought in the present invention has been fully described in the technical requirements.

Claims

1. A modified cold-cutting blade structure for cutting a composite pipe, characterized by: The system includes a cutter holder, an upper cutter holder, an adjustment assembly, a lower cutter holder, a cutting mechanism, and a balancing assembly. The cutter holder and lower cutter holder are vertically aligned and joined together to form a hollow rectangular structure that is open on both sides, and are interlocked with a horizontally arranged composite tube. Inside the cutter holder, directly above the composite tube, is a vertically aligned upper cutter holder that matches the lower cutter holder. The upper and lower cutter holders are symmetrically arranged vertically and interlocked, and the adjustment assembly allows for vertical up-and-down movement within the cutter holder relative to the area above the composite tube. The outer side of the composite tube is symmetrically provided with a cross-shaped cutting mechanism along the circumferential direction. The two upper cutting mechanisms are installed on the corresponding positions on the lower surface of the upper blade holder, and the two lower cutting mechanisms are installed on the corresponding positions on the upper surface of the lower blade holder. The middle positions on the left and right sides of the upper blade holder and the middle positions on the left and right sides of the lower blade holder are also symmetrically provided with a rounding and balancing component for clamping and rounding the composite tube. After the cutting ends of the four cutting mechanisms contact the surface of the composite tube, the composite tube is cut by rotating the cutting blade holder around the axial direction of the composite tube.

2. The modified cold-cutting blade structure for cutting a composite pipe according to claim 1, characterized in that: The cutter holder is an inverted U-shape that matches the composite pipe, and its opening slot is set horizontally and suspended on the horizontally set composite pipe. The two opening ends of the cutter holder extend vertically downward from the front and rear sides of the composite pipe to a position slightly below the horizontal plane where the center of the composite pipe is located, and the distance between the two opening ends is greater than the outer diameter of the composite pipe, and ensures that its internal height is greater than the outer diameter of the composite pipe.

3. The modified cold-knife structure for cutting a composite tube according to claim 2, characterized by: The lower blade holder is V-shaped to match the composite pipe, and its opening slot is arranged horizontally. The horizontal width of the lower blade holder is greater than the horizontal width of the cutter holder, and its two opening ends are vertically flanged upwards, ensuring that the distance between the flanges of its two opening ends is consistent with the distance between the two opening ends of the cutter holder. The upper blade holder is V-shaped to match the lower blade holder, and its opening slot is arranged horizontally. The horizontal width of the upper blade holder is consistent with the horizontal width of the cutter holder, and its two opening ends are arranged downwards to both sides, ensuring that the distance between its two opening ends is consistent with the distance between the two opening ends of the cutter holder.

4. The modified cold-knife structure for cutting a composite tube according to claim 3, characterized by: It also includes a connecting shaft; a slot matching the two opening ends of the cutter holder is vertically embedded in the middle of the two opening ends of the lower cutter holder, and each slot extends outward from the inner and outer sides of the two opening ends of the lower cutter holder in the front-back direction; the two opening ends of the cutter holder are vertically aligned and inserted into the corresponding slots, and a connecting shaft is horizontally inserted through the two opening ends of the cutter holder relative to the corresponding slots, with the left and right ends of each connecting shaft extending outward from the left and right sides of the corresponding opening ends of the lower cutter holder, and the cutter holder and the lower cutter holder are spliced ​​and connected together by the connecting shaft.

5. The modified cold-knife structure for cutting a composite tube according to claim 3, characterized by: The adjustment assembly includes an adjustment screw and a lever sleeve; a lever sleeve is also vertically provided at the middle position of the upper surface of the cutter holder, and the lower end of the lever sleeve extends vertically downward from the inner top surface of the cutter holder and is integrally formed with the cutter holder; the adjustment screw is T-shaped, and its vertical side is a threaded section, which passes through the lever sleeve coaxially in the downward direction. The vertical side of the adjustment screw is screwed to the lever sleeve, and its vertical side end face is rotatably connected to the middle position of the upper surface of the upper cutter holder. Thus, by rotating the adjustment screw, the upper cutter holder is driven to move vertically up and down relative to the area above the composite pipe inside the cutter holder.

6. The modified cold-knife structure for cutting a composite tube according to claim 5, characterized by: Each cutting mechanism includes a mounting base, a pin, a cutting blade, and a drive assembly. Cutting blades are symmetrically arranged in a cross shape along the circumferential direction on the outer side of the composite tube, and each cutting blade is vertically arranged along the radial direction of the composite tube. The two upper cutting blades are located at corresponding positions on the lower surface of the upper blade holder, with their upper portions extending into the interior of the upper blade holder, ensuring that the upper blade holder does not interfere with the rotational movements of the two upper cutting blades around their own axial direction. The two lower cutting blades are located at corresponding positions on the upper surface of the lower blade holder, with their lower portions extending into the interior of the lower blade holder, ensuring that the lower blade holder does not interfere with the rotational movements of the two lower cutting blades around their own axial direction. The rotational movement does not cause interference; mounting seats are respectively provided vertically on the lower surface of the upper tool holder relative to the left and right sides of the corresponding cutter, and on the upper surface of the lower tool holder relative to the left and right sides of the corresponding cutter, and each mounting seat is integrally formed with the corresponding upper or lower tool holder; a pin is also provided horizontally and coaxially through the center of each cutter, and each pin is clearance-fitted with the corresponding cutter. Both ends of each pin are respectively rotatably connected to the corresponding mounting seat around its own axis, and one end is respectively linked to the drive end of the corresponding drive assembly, thereby driving the corresponding cutter to rotate around its own axis.

7. The modified cold-knife structure for cutting a composite tube according to claim 6, characterized by: The upper limit position of the upper blade holder must ensure that the two upper blades move vertically upward away from the composite tube along with the upper blade holder, and do not interfere with the horizontal movement of the composite tube through the blade holder; the lower limit position of the upper blade holder must ensure that when the composite tube is horizontally supported on the two lower blades, the two upper blades move vertically downward along with the upper blade holder and contact the corresponding positions on the surface of the composite tube.

8. The modified cold-knife structure for cutting a composite tube according to claim 6, characterized by: The four balancing components are arranged symmetrically in a rectangle, and each balancing component includes a tool holder connecting plate, a bolt, an intermediate connecting plate, a pressure wheel connecting plate, a pressure wheel mounting bracket, a pressure wheel, and a traction spring. Threaded holes matching the bolts are vertically embedded at intervals on the middle positions of the left and right sides of the upper tool holder and the lower tool holder. Tool holder connecting plates are also vertically arranged on the middle positions of the left and right sides of the upper and lower tool holders. On the left side of each tool holder connecting plate, corresponding to each threaded hole, a mounting hole matching the threaded hole is vertically embedded through it. Through the cooperation of the mounting holes, threaded holes, and bolts, the four tool holder connecting plates are screwed onto the middle positions of the left and right sides of the upper and lower tool holders. On the upper and lower sides of the composite pipe, relative to the outer side of each tool holder connecting plate, horizontal pressure roller connecting plates are respectively provided. The four pressure roller connecting plates and the four tool holder connecting plates are arranged in the same vertical and horizontal plane. Between the outer surface of each tool holder connecting plate and the lower surface of the adjacent pressure roller connecting plate, an intermediate connecting plate is also provided horizontally. One end of each intermediate connecting plate is vertically and horizontally hinged to the corresponding pressure roller connecting plate, and the other end is vertically and horizontally hinged to the corresponding tool holder connecting plate. A traction spring is also provided obliquely between the surface of each intermediate connecting plate near the composite pipe and the end face of the corresponding tool holder connecting plate near the composite pipe. One end of each traction spring is vertically and horizontally hinged to the corresponding position of the intermediate connecting plate, and the other end is connected to the corresponding tool holder. The connecting plates are vertically and horizontally hinged at corresponding positions, and the traction spring ensures that each clamping wheel connecting plate is positioned closer to the composite tube than its corresponding tool holder connecting plate. Each clamping wheel connecting plate has a horizontally symmetrical U-shaped clamping wheel mounting bracket on both its front and rear ends. The bottom of each clamping wheel mounting bracket is integrally formed with the corresponding clamping wheel connecting plate, with its two open ends positioned left and right, extending outwards towards the composite tube. Each clamping wheel is horizontally positioned within its corresponding clamping wheel mounting bracket, and its two ends are rotatably connected to the inner surfaces of the two open ends of the corresponding clamping wheel mounting bracket, ensuring that its axial direction is consistent with the axial direction of the composite tube. This allows the traction spring to apply tension to the clamping wheel through the cooperation of the intermediate connecting plate and the tool holder connecting plate, clamping and rounding the composite tube using the clamping wheel.

9. The modified cold-knife blade structure for cutting a composite tube according to claim 8, characterized by: Each of the clamping rollers is covered with a matching rubber, and the specifications of each traction spring are required to ensure that when the composite tube is cut close to the upper and lower blade holders, the intermediate connecting plate and the blade holder connecting plate can cooperate to form a limit, thereby preventing the surface of the composite tube from being worn by the upper or lower blade holder.

10. A method of using a modified cold-knife blade structure for cutting a composite tube according to claim 9, wherein Includes the following steps: Step 1: First, turn the adjusting screw counterclockwise to raise the upper tool post to its upper limit position; Step 2: Then, pass the composite pipe horizontally through the cutter holder and support the desired cutting position of the composite pipe on the two cutters on the lower side; Step 3: Then, by using bolts, mounting holes and threaded holes, install the four rounding and balancing components on the corresponding positions on the left and right sides of the upper tool holder and the corresponding positions on the left and right sides of the lower tool holder, and position the eight clamping rollers on the side close to the composite pipe. Step 4: Then rotate the adjusting screw clockwise to lower the upper blade holder and make the two upper blades contact the corresponding positions on the surface of the composite tube. At this time, the traction spring applies tension to the clamping wheels through the cooperation of the middle connecting plate and the blade holder connecting plate, so that the eight clamping wheels respectively contact the surface of the composite tube, thereby clamping and rounding the composite tube. Step 5: Then start the cutting mechanism, and then rotate the cutting tool holder around the composite pipe axis by adjusting the screw to cut the composite pipe. At the same time, you need to slowly rotate the adjusting screw clockwise to ensure the cutting depth until the composite pipe is cut. During this process, the intermediate connecting plate and the tool holder connecting plate cooperate to form a limit to prevent the surface of the composite pipe from being worn by the upper and lower tool holders.

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